Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 1b865214 authored by Rajendra Nayak's avatar Rajendra Nayak Committed by Kevin Hilman
Browse files

cpufreq: OMAP: Handle missing frequency table on SMP systems 



On OMAP4, if the first CPU fails to get a valid frequency table (this
could happen if the platform does not register any OPP table), the
subsequent CPU instances end up dealing with a NULL freq_table and
crash.

Check for an already existing freq_table, before trying to create one,
and increment the freq_table_users only if the table is sucessfully
created.

Signed-off-by: default avatarRajendra Nayak <rnayak@ti.com>
Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Cc: <linux-pm@vger.kernel.org>
Signed-off-by: default avatarKevin Hilman <khilman@ti.com>
parent 5b6e3eb5

drivers/cpufreq/omap-cpufreq.c

+3 −1
Original line number Diff line number Diff line
@@ -218,7 +218,7 @@ static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy) 


	policy->cur = policy->min = policy->max = omap_getspeed(policy->cpu);



	if (atomic_inc_return(&freq_table_users) == 1)

	if (!freq_table)

		result = opp_init_cpufreq_table(mpu_dev, &freq_table);



	if (result) {
@@ -227,6 +227,8 @@ static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy) 
		goto fail_ck;

	}



	atomic_inc_return(&freq_table_users);



	result = cpufreq_frequency_table_cpuinfo(policy, freq_table);

	if (result)

		goto fail_table;